A Battery Cell Equalisation System Based on a Supercapacitors Tank and DC–DC Converters for Automotive Applications

A battery cell equalisation system for automotive applications based on a supercapacitors energy storage SCES tank is proposed. The main advantages of the developed system are the utilisation of the regenerative brake energy for battery cell equalisation, reduction in the number of DC–DC converters,...

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Main Authors: Borislav Dimitrov, Sylvia Konaklieva
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:World Electric Vehicle Journal
Subjects:
Online Access:https://www.mdpi.com/2032-6653/14/7/185
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author Borislav Dimitrov
Sylvia Konaklieva
author_facet Borislav Dimitrov
Sylvia Konaklieva
author_sort Borislav Dimitrov
collection DOAJ
description A battery cell equalisation system for automotive applications based on a supercapacitors energy storage SCES tank is proposed. The main advantages of the developed system are the utilisation of the regenerative brake energy for battery cell equalisation, reduction in the number of DC–DC converters, the flexible operation expressed by the possibility to address each battery cell with bi-directional switches, and acceptable efficiency in all modes of operation. The energy transfer between the SCES and battery cells is precisely analysed with modelling and simulations in steady-state and transient conditions. Power loss is estimated per sub-system, systemising the loss reduction techniques and achieving the maximum efficiency. The required DC–DC converters are described and designed according to the specific modes of operation in the developed application. Finally, the experimental verification is provided using a small physical model.
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spelling doaj.art-caa03a162d364b13aed2dfe5a193f71e2023-11-18T21:48:59ZengMDPI AGWorld Electric Vehicle Journal2032-66532023-07-0114718510.3390/wevj14070185A Battery Cell Equalisation System Based on a Supercapacitors Tank and DC–DC Converters for Automotive ApplicationsBorislav Dimitrov0Sylvia Konaklieva1School of Engineering, Warwick University, Coventry CV2 2DX, UKSchool of Engineering, Warwick University, Coventry CV2 2DX, UKA battery cell equalisation system for automotive applications based on a supercapacitors energy storage SCES tank is proposed. The main advantages of the developed system are the utilisation of the regenerative brake energy for battery cell equalisation, reduction in the number of DC–DC converters, the flexible operation expressed by the possibility to address each battery cell with bi-directional switches, and acceptable efficiency in all modes of operation. The energy transfer between the SCES and battery cells is precisely analysed with modelling and simulations in steady-state and transient conditions. Power loss is estimated per sub-system, systemising the loss reduction techniques and achieving the maximum efficiency. The required DC–DC converters are described and designed according to the specific modes of operation in the developed application. Finally, the experimental verification is provided using a small physical model.https://www.mdpi.com/2032-6653/14/7/185battery cellenergy storagebi-directional converterbuck-boosttwo-switch forward convertersupercapacitor
spellingShingle Borislav Dimitrov
Sylvia Konaklieva
A Battery Cell Equalisation System Based on a Supercapacitors Tank and DC–DC Converters for Automotive Applications
World Electric Vehicle Journal
battery cell
energy storage
bi-directional converter
buck-boost
two-switch forward converter
supercapacitor
title A Battery Cell Equalisation System Based on a Supercapacitors Tank and DC–DC Converters for Automotive Applications
title_full A Battery Cell Equalisation System Based on a Supercapacitors Tank and DC–DC Converters for Automotive Applications
title_fullStr A Battery Cell Equalisation System Based on a Supercapacitors Tank and DC–DC Converters for Automotive Applications
title_full_unstemmed A Battery Cell Equalisation System Based on a Supercapacitors Tank and DC–DC Converters for Automotive Applications
title_short A Battery Cell Equalisation System Based on a Supercapacitors Tank and DC–DC Converters for Automotive Applications
title_sort battery cell equalisation system based on a supercapacitors tank and dc dc converters for automotive applications
topic battery cell
energy storage
bi-directional converter
buck-boost
two-switch forward converter
supercapacitor
url https://www.mdpi.com/2032-6653/14/7/185
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AT sylviakonaklieva abatterycellequalisationsystembasedonasupercapacitorstankanddcdcconvertersforautomotiveapplications
AT borislavdimitrov batterycellequalisationsystembasedonasupercapacitorstankanddcdcconvertersforautomotiveapplications
AT sylviakonaklieva batterycellequalisationsystembasedonasupercapacitorstankanddcdcconvertersforautomotiveapplications